Draft Page

\documentclass[16pt]{article}
\usepackage{tikz,ulem}
\usepackage[a4paper]{geometry}

\newsavebox{\DraftBox}
\savebox\DraftBox{%
    \begin{tikzpicture}[remember picture,overlay,align=center]
    \node at ([yshift=-2cm]current page.north) {\LARGE\textbf{\uline{Draft Page}}};
    \draw[line width=5pt]
    (current page.north west) -- (current page.south east);
    \draw[line width=5pt]
    (current page.south west) -- (current page.north east);
    \end{tikzpicture}%
}

\thispagestyle{empty}
\begin{document}
    \begin{tikzpicture}[remember picture, overlay]
    \node at (current page.center) {\usebox\DraftBox};
    \end{tikzpicture}
\end{document}